变截面圆弧形流管无阀压电泵的理论与试验研究  

Theoretical and Experimental Studies on Valve-less Piezoelectric Pump with Variable Cross Section Arc-shaped Tubes

作　　者：严秋锋 孙婉婷 王红梅 YAN Qiufeng;SUN Wanting;WANG Hongmei(School of Electrical Engineering,Nantong University,Nantong 226019;Faculty of Engineering,The Hong Kong Polytechnic University,Hong Kong 999077,China;School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001)

机构地区：[1]南通大学电气工程学院,南通226019 [2]香港理工大学工程学院,中国香港999077 [3]哈尔滨工业大学材料科学与工程学院,哈尔滨150006

出　　处：《机械工程学报》2023年第14期320-327,共8页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(41901269)。

摘　　要：哥氏力会对圆弧形流管中流动的流体产生促进或阻碍作用,同时结合扩张/收缩流管提出一种变截面圆弧形流管无阀压电泵。通过分析流体在圆弧形流管中顺、逆时针的流动特性,建立流体顺、逆时针流动的速度差公式。以圆弧形流管无阀压电泵为基础,阐明变截面圆弧形流管无阀压电泵的工作原理,并建立泵流量方程。利用3D打印技术分别制作圆弧形流管无阀压电泵和变截面圆弧形流管无阀压电泵,并进行泵流量试验研究。试验结果表明,两种压电泵的输出流量都随电压的增加而增加;驱动电压保持300 V_(p-p)不变,圆弧形流管无阀压电泵在驱动频率为10 Hz时泵流量最大,为1.76 mL/min;变截面圆弧形流管无阀压电泵在驱动频率为14 Hz时泵流量最大,达到7.2 mL/min;与圆弧形流管无阀压电泵相比,变截面圆弧形流管无阀压电泵的平均输出流量提高了235%,变截面圆弧形流管无阀压电泵的泵流量随着圆弧半径的增加而增加。泵的输出流量源自地球自转产生的哥氏力,泵流量的大小能够反映所处位置地球的转速,有望通过泵流量的测量来获得本地位置,为新型导航装置的研制奠定基础。Coriolis force can promote or hinder the fluid flowing in the circular arc-shaped tubes.Simultaneously,combined with the nozzle/diffusers flow tube,a valve-less piezoelectric pump with variable cross section arc-shaped tubes(VPPVCSAT)is proposed.According to the flow characteristics of liquid in circular arc-shaped tubes,the velocity difference model of piezoelectric pump is established.Based on valve-less piezoelectric pump with arc-shaped tubes(VPPAT),the working principle of VPPVCSAT is expounded,and the pump flow equation is established.By using 3D printing technology,VPPAT and VPPVCSAT were made,and the experimental research was carried out.The experimental results show that,with the increase of voltage,the output flow of VPPAT and VPPVCSAT are increased.When the driving is 300 V_(p-p) and the driving frequency is 10 Hz,the output flow of VPPAT reaches the maximum value of 1.76 mL/min.While the driving is 300 V_(p-p) and the driving frequency is 14 Hz,the output flow of VPPVCSAT reaches the maximum value of 7.2 mL/min.Compared with VPPAT;the average output flow of VPPVCSAT is increased by 238%.The output flow of VPPVCSAT is increases with the increase of arc radius.The output flow is generated from the Coriolis force of the Earth’s rotation,and the rotational speed of the location of pump can be reflected by the amplitude of the flow.Therefore,local geographical information can be acquired by measuring the Earth’s rotational speed,forming a new principle of navigation.

关 键 词：无阀 压电泵 变截面 圆弧形流管 流量 

分 类 号：TH35[机械工程—机械制造及自动化] TH38